Android下载网络图片到本地sdcard中

1.方法调用：

 

imageDownload(https://www.baidu.com/img/bdlogo.png);

 

 2.图片下载：

 

private void imageDownload(final String imgUrl){
    final String tempFileName = System.currentTimeMillis() + ".png";
    new Thread(new Runnable() {
      URL url;
      @Override
      public void run() {
        // TODO Auto-generated method stub
        try {
          url = new URL(imgUrl);
          InputStream is = url.openStream();
          Bitmap bitmap = BitmapFactory.decodeStream(is);
          saveFile(bitmap, tempFileName);
          handler.sendEmptyMessage(GETPIC_OK);
          is.close();
        } catch (MalformedURLException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
        } catch (IOException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
        }
      }
    }).start();
  }

 3.下载完成，handle处理：

 

Handler handler = new Handler() {
    public void handleMessage(android.os.Message msg) {

      if (msg.what == GETPIC_OK) {
        if(!Utils.isEmpty(userImagePath)){
                  }
      }

    };
  };